WO2022027483A1

WO2022027483A1 - Methods and systems for exchanging information for sidelink communications

Info

Publication number: WO2022027483A1
Application number: PCT/CN2020/107521
Authority: WO
Inventors: Weiqiang DU; Lin Chen; Wei Luo; Boyuan ZHANG
Original assignee: Zte Corporation
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2022-02-10
Also published as: CN116261900A

Abstract

Methods, apparatus, and systems for selecting and establishing sidelink resources amongst UE. The disclosure provides various systems and methods of exchanging configuration and measurement parameters between UEs to set up the grant of resources, In certain embodiments, a UE is provided with a timer that provides conditions for receiving assistance information in the creation of grants of resources.

Description

METHODS AND SYSTEMS FOR EXCHANGING INFORMATION FOR SIDELINK COMMUNICATIONS

TECHNICAL FIELD

This disclosure is directed generally to wireless communications.

BACKGROUND

Mobile communication technologies are moving the world toward an increasingly connected and networked society. The rapid growth of mobile communications and advances in technology have led to greater demand for capacity and connectivity. Other aspects, such as energy consumption, device cost, spectral efficiency, and latency are also important to meeting the needs of various communication scenarios. Various techniques, including new ways to provide higher quality of service, longer battery life, and improved performance are being discussed.

SUMMARY

This patent document describes, among other things, techniques for communicating in an in a sidelink deployment for New Radio (NR) .

The following aspects may be preferably implemented in various embodiments.

In an aspect, a first device transmits an indication relating to whether a second device can provide assistance resource selection information and upon transmitting the indication, starting or restarting a timer having a value T0 at the first wireless device. In an aspect, the assistance resource selection information is related to: (a) a priority of the logical channel that second device need to provide assistance resource selection information for the priority, or (b) a destination ID that second device need to provide assistance resource selection information for the destination, or (c) a logical channel ID that second device need to provide assistance resource selection information for the logical channel, or (d) the resource pool or resource pool ID that second device need to provide assistance resource selection information for the resource pool, or (e) the value of a timer T0, that second device need to provide assistance resource selection information before T0 expiry wherein the value T0 is configured per the first wireless device, or the Data Radio Bearer (DRB) , or the Sidelink Signaling Radio Bearer (SRB) , or the destination, or the logical channel, or the priority, or the resource pool, or the Common Resource Block (CRB) . In yet another aspect, the value T0 is configured per the first wireless device, or the DRB, or the SRB, or the destination, or the logical channel, or the priority, or the resource pool, or the CRB. In yet another aspect, the value T0 is configured per the first wireless device, wherein the first device wireless can start or restart timer T0 after an indication that the second wireless device is providing the assistance resource selection information for the first wireless device, wherein the transmission resource of the first wireless device is determined based at least in part on the assistance resource selection information from the second wireless device.

In yet another aspect, one or more logical channels, each logical channel having a priority, wherein the value T0 is configured per priority , wherein the first wireless device starts or restarts time T0 after an indication that the second wireless device is providing the assistance resource selection information for the logical channel with the priority, wherein the first wireless device determines the transmission resource of the respective logical channel with the priority based at least in part on the device assistance resource selection information.

In yet another aspect, one or more values T0 are each configured by and associated with each one or more destinations, wherein the first wireless device starts or restarts time T0 for each destination after an indication that the second wireless device is providing the assistance resource selection information for the destinations, wherein the first wireless device determines a transmission resource of the respective destination based at least in part on the device assistance resource selection information. In yet another aspect, the value T0 is configured per the DRB, the SRB, or the logical channel, wherein the first wireless device associates the value T0 for each logical channel, wherein the first wireless device starts or restarts time T0 after an indication that the second wireless device is providing the assistance resource selection information for the logical channel, wherein the first wireless device determines the transmission resource of the logical channel based at least in part on the device assistance resource selection information. In yet another aspect, the value T0 is configured per the DRB, the SRB, wherein the first wireless device associates the value T0 for each logical channel, wherein the first wireless device starts or restarts time T0 after an indication that the second wireless device is providing the assistance resource selection information for the DRB or SRB, wherein the first wireless device determines the transmission resource of the DRB or SRB based at least in part on the device assistance resource selection information.

In yet another aspect, the first wireless device associates one timer for every resource pool and the value of T0 is configured per each resource pool, the first wireless device is configured to start or restart timer T0 for each resource pool if the second wireless device provides assistance resource selection information, and the first wireless device determines transmission resources in this resource pool by taking assistance resource selection information from the second wireless device into consideration. In yet another aspect, the value t0 is configured per CBR or CBR range and first wireless device associates one timer for every CBR or CBR range, the first wireless device is configured to start or restart timer T0 for the CBR range if the first wireless device is taking assistance resource selection information from the second wireless device into consideration. In yet another aspect, the value T0 is configured via a pre-configuration, or system information, or Radio Resource Control (RRC) signaling, or PC5 RRC signaling.

In yet another aspect, the transmission resource is selected to create a grant if the timer is not running or has passed T0 or wherein the first wireless device obtains the assistance resource selection information from the second wireless device and the transmission resource is selected to create the grant by taking the assistance resource selection information into consideration if the timer is running. In yet another aspect, the first wireless device is configured to select a destination related to one of a unicast, a groupcast and a broadcast having a logical channel with the highest priority or the MAC Control Element (MAC CE) , among the logical channels that satisfy the specific conditions and MAC CE (s) , if any, for the grant associated with the Sidelink Control Information (SCI) . In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if timer T0 of the logical channel expired and the value of T0 is configured per the logical channel. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if timer T0 of the destination has expired and the value of T0 is configured per the destination and the logical channel belongs to the destination. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if the timer T0 of the priority has expired and the value of T0 is configured per the priority and the logical channel is configured with the priority.

In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if the timer T0 expired and the value of T0 is configured per the first wireless device. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per DRB/SRB and T0 of the DRB/SRB is not running or has expired. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per resource pool and the resource pool associated with T0 is selected to create the grant and the T0 of the resource pool is not running or has expired. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per CBR and T0 is not running or expired. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per the first wireless device, T0 is running, and the first wireless device obtains the second wireless device’s assistance resource selection information. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per destination, T0 of the destination is running, and the first wireless device determines the transmission resource of the destination by taking assistance resource selection information from the second wireless device into consideration, and the first wireless device receives assistance resource selection information for the destination from the second wireless device. In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per destination, T0 of the destination is running, and the first wireless device determines the transmission resource of the destination by taking assistance resource selection information from second wireless device into consideration, and the first wireless device receives assistance resource selection information for the destination from the second wireless device.

In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per priority of the logical channel, T0 of the priority is running, and the first wireless device determines transmission resource of the logical channel with the priority by taking assistance resource selection information from the second wireless device into consideration, and the first wireless device receives assistance resource selection information for the priority from the second wireless device.

In yet another aspect, the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per CBR, T0 is not running or expiry, and UE-B receives assistance resource selection information. In yet another aspect, the logical channel is selected if a reliability of the logical channel is lower than a reliability threshold, wherein the first wireless device receives the assistance resource selection information and the first wireless device determines the logical channel based at least in part of the assistance resource selection information. In yet another aspect, the logical channel is selected if a reliability of the logical channel is lower than a reliability threshold. In yet another aspect, the priority of the logical channel is lower is lower than a reliability threshold, wherein the first wireless device receives the assistance resource selection information and the first wireless device determines the transmission resource based at least in part of the assistance resource selection information.

In yet another aspect, the reliability threshold or a priority threshold is configured via a pre-configuration, or system information, or RRC signaling. In yet another aspect, the reliability threshold or a priority threshold is configured via per: wireless device, or priority, or logical channel, or DRB.

In another aspect, a first wireless device transmits to one or more wireless devices, an indication relating to whether a second device can provide assistance resource selection information and receives a response to the indication.

In yet another aspect, one or more devices indicate that they can provide assistance resource selection information for another one of the one or more devices, wherein the first wireless device determines a transmission resource used to send data to the device or another one of the one or more devices based in part on the assistance resource selection information provided by the device. In yet another aspect, one of the one or more devices indicates that it can provide assistance resource selection information for itself only, wherein the first wireless device determines a transmission resource used to send data to the device based in part on the assistance resource selection information provided by the one of the one or more devices. In yet another aspect, the one of the one or more devices indicates that it can not provide assistance resource selection information for itself and another one of the one or more devices, wherein the another one of the one or more devices indicates that it can provide assistance resource selection information for itself and another one of the one or more devices, wherein the first wireless device determines a transmission resource used to send data to the device based in part on the assistance resource selection information provided by the another one of the one or more devices.

In aspects of the disclosure, the transmission and reception of messages is performed by various devices, including MT, UE, and base stations.

These, and other, aspects are described in the present disclosure.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 illustrates an example V2X communication system.

FIG. 2 illustrates a transmission inquiring whether a UE can provide assistance resource selection information.

FIG. 3 illustrates a transmission from a UE.

FIG. 4 illustrates the transmission of an indication from one UE regarding whether another UE can provide assistance resource selection information.

FIG. 5 Illustrates a flowchart for starting a timer with UE-B.

FIG. 6 illustrates multiple UEs in communication.

FIG. 7 shows an example of a wireless communication system where techniques in accordance with one or more embodiments of the present technology can be applied.

FIG. 8 is a block diagram representation of a portion of a radio station in accordance with one or more embodiments of the present technology can be applied.

DETAILED DESCRIPTION

The disclosure relates to wireless systems. More specifically, it relates to communications between UE for side link communication, and for the scheduling of resources. Parameters are exchanged by one UE to another so that the UE can be configured.

FIG. 1 is a block diagram of an example V2X communication system. In the LTE (Long Term Evolution) -based V2X communications study organized by 3GPP, user-based devices (User Equipment) may communicate using V2X communication between a direct/sidelink link. For example, data may not be forwarded by the base station and the core network, and may be directly transmitted by the source UE to the target UE through an air interface (PC5 interface) , as shown in FIG. 1.

With the advancement of communication technology and the development of the automation industry, the V2X communication scenario is further extended and has higher performance requirements. 3GPP has established research on vehicle networking communication based on advanced V2X services of the fifth-generation mobile communication technology (5G) , including 5G air interface-based vehicle networking communication and 5G direct link (sidelink) -based vehicle networking communication.

For NR-based vehicle to everything (V2X) sidelink communications, PC5 interface RRC signaling interaction may be supported. Specifically, PC5 RRC signaling may include a message for transmitting capability of UEs. The present embodiments relates to obtaining peer UE’s capability information and interacting for PC5 UE capability information exchange for sidelink transmission parameters selection. In addition, PC5 RRC signaling may not be transmitted without security protection, and the present embodiments may provide a security protection mechanism for protecting PC5 RRC signaling at the access-stratum (AS) layer.

It should be understood that any type of UEs can be used, as known in the art, and that the specific hardware is not limited to the configurations described herein. It should also be understood that any configurations, and numbers, of networked devices can be used.

FIG. 2 illustrates a transmission inquiring whether a UE can provide assistance resource selection information. UE-B 202 transmits an indication 206 to UE-A 204 asking UE-A 204 whether it can provide assistance resource information. UE-B 202 starts a timer T0 208 that has a T0 expiration 210. Prior to the expiration, UE-A provides assistance resource information while T0 is still running at event A1 212. Based on this information, the UE-B has several options, including using the assistance resource selection information.

FIG. 3 illustrates a transmission from a UE 302 to another UE 304 an indication regarding whether the UE can provide assistance resource selection information. Upon transmitting, a timer having a value T0 starts at UE 302. In an embodiment, the indication is related to: (a) a priority of the logical channel that second device need to provide assistance resource selection information for the priority, or (b) a destination ID that second device need to provide assistance resource selection information for the destination, or (c) a logical channel ID that second device need to provide assistance resource selection information for the logical channel, or (d) the resource pool or resource pool ID that second device need to provide assistance resource selection information for the resource pool, or (e) the value of a timer T0, that second device need to provide assistance resource selection information before T0 expiry wherein the value T0 is configured per the UE 302, or the Data Radio Bearer (DRB) , or the Sidelink Signaling Radio Bearer (SRB) , or the destination, or the logical channel, or the priority, or the resource pool, or the Common Resource Block (CRB) .

In an embodiment, the value for the timer T0 can be is configured per the UE 302, or the DRB, or the SRB, or the destination, or the logical channel, or the priority, or the resource pool, or the CBR. The UE can start or restart timer T0 after an indication that the UE 304 is providing the assistance resource selection information for the UE 302, wherein the transmission resource of the UE 302 is determined based at least in part on the assistance resource selection information from the UE 304. In an embodiment each logical channel can have a priority, wherein the value T0 is configured per priority , wherein the UE 302 starts or restarts time T0 after an indication that the UE 304 is providing the assistance resource selection information for the logical channel with the priority, wherein the UE 302 determines the transmission resource of the respective logical channel with the priority based at least in part on the device assistance resource selection information.

In another embodiment, several UEs exist for UE 302 to transmit assistance resource selection information to. In this case, one or more values T0 each configured by and associated with each one or more destinations exist. The UE 302 starts or restarts time T0 for each destination after an indication that the UE that received the indication is providing the assistance resource selection information. In an embodiment, the value T0 is configured per the DRB, the SRB, or the logical channel, wherein the UE 302 associates the value T0 for each logical channel, wherein the UE 302 starts or restarts time T0 after an indication that the UE 304 is providing the assistance resource selection information for the logical channel, wherein the UE 302 determines the transmission resource of the logical channel based at least in part on the device assistance resource selection information. In an embodiment, the value T0 is configured per the DRB, the SRB, and the UE 302 associates the value T0 for each logical channel, and UE 302 starts or restarts time T0 after an indication that the UE 304 is providing the assistance resource selection information for the DRB or SRB, and the UE 302 determines the transmission resource of the DRB or SRB based at least in part on the device assistance resource selection information.

In an embodiment, UE 302 associates one timer for every resource pool and the value of T0 is configured per each resource pool, and UE 302 is configured to start or restart timer T0 for each resource pool if UE 304 provides assistance resource selection information, and UE 302 determines transmission resources in this resource pool by taking assistance resource selection information from the UE 304 into consideration. In an embodiment, value T0 is configured per CBR or CBR range and UE 302 associates one timer for every CBR or CBR range, the UE 302 is configured to start or restart timer T0 for the CBR range if the UE 302 is taking assistance resource selection information from the UE 304 into consideration. In an embodiment, T0 is configured via a pre-configuration, or system information, or Radio Resource Control (RRC) signaling, or PC5 RRC signaling.

In an embodiment, UE302 is configured to select a destination related to one of a unicast, a groupcast and a broadcast having a logical channel with the highest priority or the MAC Control Element (MAC CE) , among the logical channels that satisfy the specific conditions and MAC CE (s) , if any, for the grant associated with the Sidelink Control Information (SCI) .

In an embodiment, UE302 is configured to select the logical channels satisfying the specific conditions among the logical channels belonging to the selected Destination

In an embodiment, the specific conditions include UE 302 selects a logical channel if timer T0 of the logical channel expired and the value of T0 is configured per the logical channel; or 302 selects a logical channel if timer T0 of the destination has expired and the value of T0 is configured per the destination and the logical channel belongs to the destination; or UE 302 selects a logical channel if the timer T0 of the priority has expired and the value of T0 is configured per the priority and the logical channel is configured with the priority. In another embodiment, the specific conditions include UE 302 selects a logical channel if the timer T0 expired and the value of T0 is configured per the UE 302. In another embodiment the specific conditions include UE302 selects a logical channel if T0 is associated per DRB/SRB and T0 of the DRB/SRB is not running or has expired. In another embodiment the specific conditions include UE 302 selects a logical channel if T0 is associated per resource pool and the resource pool associated with T0 is selected to create the grant and the T0 of the resource pool is not running or has expired. In another embodiment, the specific conditions include UE 302 selects a logical channel if T0 is associated per CBR and T0 is not running or expired. In another embodiment, the specific conditions include UE 302 selects a logical channel if T0 is associated per the UE 302, T0 is running, and the UE 302 obtains the UE 304’s assistance resource selection information.

In yet another embodiment, the specific conditions include UE 302 selects a logical channel if T0 is associated per destination, T0 of the destination is running, and the UE 302 determines the transmission resource of the destination by taking assistance resource selection information from the UE 304 into consideration, and the UE 302 receives assistance resource selection information for the destination from the UE 304. In an embodiment, the specific conditions include the UE 302 selects a logical channel if T0 is associated per destination, T0 of the destination is running, and the UE 302 determines the transmission resource of the destination by taking assistance resource selection information from UE 304 into consideration, and UE 302 receives assistance resource selection information for the destination from UE 304. In an embodiment, the specific conditions include UE 302 selects a logical channel if T0 is associated per priority of the logical channel, T0 of the priority is running, and the UE 304 determines transmission resource of the logical channel with the priority by taking assistance resource selection information from the UE 304 into consideration, and the UE 302 receives assistance resource selection information for the priority from the UE 304.

In an embodiment, the specific conditions include UE 302 selects a logical channel if T0 is associated per CBR, T0 is not running or expiry, and UE 302 receives assistance resource selection information. In an embodiment, the specific conditions include the logical channel is selected if a reliability of the logical channel is higher than a reliability threshold, wherein the UE 302 receives the assistance resource selection information and the UE 302 determines the logical channel based at least in part of the assistance resource selection information. In an embodiment, the specific conditions include the logical channel is selected if a reliability of the logical channel is lower than a reliability threshold. In an embodiment, the specific conditions include the priority of the logical channel is higher than a priority threshold, wherein the UE 302 receives the assistance resource selection information and the UE 302 determines the transmission resource based at least in part of the assistance resource selection information. In an embodiment, the specific conditions include the logical channel is selected if a priority of the logical channel is lower than a priority threshold.

In an embodiment, the reliability threshold or a priority threshold is configured via a pre-configuration, or system information, or RRC signaling. In another embodiment, the reliability threshold or a priority threshold is configured via per: UE, or priority, or logical channel, or DRB.

FIG. 4 illustrates the transmission of an indication from one UE regarding whether another UE can provide assistance resource selection information. UE 402 transmits to several UEs 404 an indication relating to whether any can provide assistance resource selection information.

In an embodiment, one of the devices can indicate that they can provide assistance resource selection information for another one of the one or more devices. UE 402 can determine a transmission resource used to send data to the device based on the assistance resource selection information. In an embodiment, one UE 406 indicates that it can provide assistance resource selection information for itself only. Here, UE402 determines a transmission resource used to send data to the device based in part on the assistance resource selection information provided by the one of the one or more devices. In another embodiment, one of UE 406 indicates that it can not provide assistance resource selection information for itself and another UE 406, but another one of the UE 404 indicates it can. In this case UE404 indicates that it can provide assistance resource selection information for itself and one of UE 406. Here, UE402 determines a transmission resource used to send data to the UE 404 and UE 406 based in part on the assistance resource selection information provided by UE 406.

FIG. 5 Illustrates a flowchart for starting a timer with UE-B. In step 502, UE-B indicates the UE-A is providing assistance resource selection information by signaling. In step 504, UE-B starts or restarts timer T0. In step 506, UE-B creates a grant to send the data of logical channel of the UE-B/destination/DRB/SRB/priority.

In an embodiment, the signaling of step 502 is related to any of:

● The priority of logical channel that UE-B determines transmission resources of the logical channel by taking assistance resource selection information from UE-A into consideration. This is used to indicate/trigger UE-A needs to provide assistance resource selection information for the priority

● The destination ID that UE-B determines transmission resource of the destination by taking assistance resource information from UE-A into consideration. This is used to indicate/trigger UE-A to need to provide assistance resource selection information for the destination

● The logical channel ID that UE-B determines transmission resource of the logical channel for by taking assistance resource information from UE-A into consideration. This is used to indicate/trigger UE-A needs to provide assistance resource selection information for the logical channel

● The resource pool ID or resource pool that UE-B determines transmission resource in this resource pool by taking assistance resource information from UE-A into consideration. This is used to indicate/trigger UE-A need to provide assistance resource selection information for the resource pool.

● The value of timer T0. T0 can be indicated per UE-B/destination/logical channel/priority/resource pool/CBR. This is used to indicate that UE-A need to provide assistance resource selection information before T0 expiry.

In an embodiment, with respect to step 504, the value T0 can be configured per UE-B/DRB/SRB/destination/logical channel/priority/resource pool/CBR/CBR range. It can also be set via preconfiguration/system information/RRC signaling/PC5 RRC signaling.

In one embodiment, if the value of T0 is configured per-UE-B, the UE-B only associates one timer T0. Here, UE-B starts or restarts timer T0 after UE-B indicates that UE-A is providing assistance resource selection information and UE-B determines the transmission resource of UE-B by taking assistance resource selection information from UE-A into consideration.

In one embodiment, if the value of T0 is configured per destination, UE-B associates one timer T0 for every destination. Here, UE-B starts or restarts timer T0 for the destination after UE-B indicates that UE-A is providing assistance resource selection information and UE-B determines the transmission resource of the destination by taking assistance resource selection information from UE-A into consideration.

In one embodiment, if the value of T0 is configured per DRB/SRB/logical channel, UE-B associates one timer T0 for every DRB/SRB/logical channel. Here, UE-B start or restart timer T0 of the DRB/SRB/logical channel if UE-B indicates that UE-A is providing assistance resource selection information and UE-B determines transmission resource of DRB/SRB/logical channel by taking assistance resource selection information from UE-A into consideration.

In one embodiment, if the value of T0 is configured per priority of logical channel, UE-B associates one timer for every logical channel priority. UE-B starts or restarts timer T0 for the priority if UE-B indicates that UE-A is providing assistance resource selection information and UE-B determines transmission resource of the logical channel with the priority by taking assistance resource selection information from UE-A into consideration.

In one embodiment, if the value of T0 is configured per resource pool, UE-B associates one timer for every resource pool. Here, UE-B starts or restarts timer T0 for the resource pool if UE-B indicates that UE-A is providing assistance resource selection information and UE-B determines the transmission resource in this resource pool by taking assistance resource selection information from UE-A into consideration.

In one embodiment, if the value of T0 is configured per CBR or CBR range, the UE-B associates one timer for every CBR or CBR range. Here, UE-B starts or restarts timer T0 for the CBR range if UE-B indicates that UE-A is providing assistance resource selection information for the measurement results of CBR that are located in configured CBR value or CBR range, and UE-B determines the transmission resource by taking assistance resource selection information from UE-A into consideration.

In an embodiment, a selection with respect to step 506 is made to a destination associated to one of unicast, groupcast and broadcast, having the logical channel with the highest priority or the MAC CE, among the logical channels that satisfy one of following conditions and MAC CE (s) , if any, for the grant associated to the SCI:

1. If T0 is associated per UE-B, T0 is not running or expired;

2. If T0 is associated per destination, T0 of destination of logical channel is not running or expired;

3. If T0 is associated per DRB/SRB/logical channel, T0 of the DRB/SRB/logical channel is not running or expired;

4. If T0 is associated per priority of logical channel, T0 of the priority of logical channel is not running or expired;

5. If T0 is associated per resource pool and the resource pool associated with T0 is selected to create this gran, T0 of the resource pool is not running or expired;

6. If T0 is associated per CBR, T0 is not running or expired;

7. If T0 is associated per UE-B, T0 is running, and UE-B obtain UE-A's assistance resource selection information;

8. If T0 is associated per destination, T0 of the destination is running, and UE-B determines transmission resource of the destination by taking assistance resource selection information from UE-A into consideration, and UE-B receives assistance resource selection information for the destination from UE-A;

9. If T0 is associated per logical channel, T0 of the logical channel is running, and UE-B determines transmission resource of the logical channel by taking assistance resource selection information from UE-A into consideration, and UE-B receives assistance resource selection information for the logical channel from UE-A;

10. If T0 is associated per priority of logical channel, T0 of the priority is running, and UE-B determines transmission resource of logical channel with the priority by taking assistance resource selection information from UE-A into consideration, and UE-B receives assistance resource selection information for the priority from the UE-A;

11. If T0 is associated per resource pool and the resource pool associated with T0 is selected to create this gran, T0 of the resource pool is running, and UE-B receives assistance resource selection information for this resource pool from the UE-A;

12. If T0 is associated per CBR, T0 is not running or expiry, and UE-B receives assistance resource selection information;

13. If reliability of logical channel is lower than reliability-threshold, if configured and UE-B determines transmission resource of the logical channel by taking assistance resource selection information from UE-A into consideration, and UE-B receives assistance resource selection information from UE-A;

14. If reliability of logical channel is lower than reliability-threshold, if configured;

15. If priority of logical channel is higher than priority-threshold, if configured and UE-B determines transmission resource of the logical channel with the priority by taking assistance resource selection information from UE-A into consideration, and UE-B receives assistance resource selection information from UE-A;

16. If priority of logical channel is lower than priority-threshold, if configured;

17. If logical channel/DRB/SRB/prioirty/destination has been configured to transmit without assistance resource selection information from UE-A;

18. If logical channel/DRB/SRB/prioirty/destination has been configured to transmit with assistance resource selection information from UE-A, and UE-B receives assistance resource selection information from UE-A

In an embodiment, the logical channels are selected if they satisfy the above conditions among the logical channels belonging to the selected destination.

In another embodiment, the priority-threshold/reliability-threshold can be configured by one of: pre-configuration, or system information, or RRC signaling.

In another embodiment, the priority-threshold/reliability-threshold can be configured by one of: per UE, or per priority, or per logical channel, or per DRB, or per destination, or per resource pool.

In another embodiment, if T0 is associated per UE-B, T0 expires, then UE-B create a grant to send data of UE-B immediately. If T0 is associated per destination, T0 expires, then UE-B create a grant to send data of the destination immediately. If T0 is associated per logical channel, T0 expires, then UE-B create a grant to send data of the logical immediately. If T0 is associated per priority of logical channel, T0 expires, then UE-B creates a grant to send data of logical channel with the priority immediately.

In further embodiment, if T0 is associated per UE-B, T0 is running , UE-B receives assistance resource information from UE-A, then UE-B stop the timer T0. If T0 is associated per destination, T0 is running, then UE-B receive assistance resource information from UE-A, then UE-B stop the timer T0. If T0 is associated per logical channel, and T0 is running, and UE-B receive assistance resource information from UE-A, then UE-B stop the timer T0. If T0 is associated per priority of logical channel, and T0 of the priority is running, and UE-B receive assistance resource information from UE-A for the priority, then UE-B stops the timer T0 of the priority.

FIG. 6 illustrates multiple UEs in communication.

In an embodiment, UE-B want to transmit data to UE-A1, A2, A3, and UE-A4 is the only UE can provide assistance resource for other UEs. Here, the logical channel in UE-B is used to store the data that will be transmitted to UE-A1 in destination1. The logical channel in UE-B that is used to store the data that will be transmitted to UE-A1 has destination1. The logical channel in UE-B that is used to store the data that will be transmitted to UE-A1 has destination1.

Provided below are exemplary scenarios.

Scenario 1: UE-B wants to transmit data to UE-A1, A2, A3.

In an embodiment, UE-A1, A2, A3 are not capable of providing assistance resource information, but UE-A4 is capable of providing assistance resource information for other UE. In this case, UE-B indicates UE-A4 providing assistance resource information. Therefore, UE-B may determine the transmission resource of the logical channel with Destination1, 2, 3 that will take UE-A4’s assistance resource selection information into consideration.

Scenario 2: UE-B want to transmit data to UE-A1, A2, A3.

In an embodiment, UE-A1, A2 are not capable of providing assistance resource information, but UE-A3 is capable of providing assistance resource information for itself and another UE. Here, UE-B indicates that UE-A3 providing assistance resource information, and UE-B may determine the transmission resource of the logical channel with Destination1, 2, 3 thatr will take UE-A3’s assistance resource selection information into consideration.

Scenario 3: UE-B wants to transmit data to UE-A1, A2, A3.

In an embodiment, UE-A1, A2 are capable of providing assistance resource information for themselves, but UE-A3 is not capable of providing assistance resource information for itself and UE-A4 is capable of providing assistance resource information for itself and other UEs. Here, UE-B indicates UE-A1, A2, A4 are providing assistance resource information. Therefore, UE-B may determine transmission resource of the logical channel with Destination1 that will take UE-A1’s assistance resource selection information into consideration, and UE-B may determine the transmission resource of the logical channel with Destination2 that will take UE-A2’s assistance resource selection information into consideration, and UE-B may determine the transmission resource of the logical channel with Destination3 hat will take UE-A4’s assistance resource selection information into consideration.

In another embodiment of the disclosure, a UE-B performs logical channel prioritization (LCP) if discontinuous reception (DRX) is configured for an RX UE of UE-B. A destination is selected that satisfies the conditions that: (1) the UE with the decision is in active time, and (2) the UE with the destination is not in off time.

In another embodiment, UE-B performs LCP and provides corresponding LCP restrictions if the resource pool only used for P-UE is configured. In one embodiment, the UE is configured with resource pool with restrictions that the resource pool can be used by P-UE or can not be used by P-UE. In another embodiment, a grant created by UE-B using the resource pool with restrictions that the resource pool can be used by P-UE is allowed to be used by traffic toward to P-UE. In another embodiment, a grant created by UE-B using the resource pool with restrictions that the resource pool can not be used by P-UE is not allowed to be used by traffic toward to P-UE.

In another embodiment, a destination is selected that meets all the following conditions: the UE with the Destination is P-UE, if the grant associated to the SCI is allowed to be used for P-UE. In further embodiment, except for the logical channels, all the embodiment can be applied to MAC CE.

FIG. 7 shows an example of a wireless communication system 700 where techniques in accordance with one or more embodiments of the present technology can be applied. A wireless communication system 700 can include one or more base stations (BSs) 705a, 705b, one or

more wireless devices

710a, 710b, 710c, 710d, and a core network 725. A

base station

705a, 705b can provide wireless service to

wireless devices

710a, 710b, 710c and 710d in one or more wireless sectors. In some implementations, a

base station

705a, 705b includes directional antennas to produce two or more directional beams to provide wireless coverage in different sectors.

The core network 725 can communicate with one or

more base stations

705a, 705b. The core network 725 provides connectivity with other wireless communication systems and wired communication systems. The core network may include one or more service subscription databases to store information related to the subscribed

wireless devices

710a, 710b, 710c, and 710d. A first base station 705a can provide wireless service based on a first radio access technology, whereas a second base station 705b can provide wireless service based on a second radio access technology. The

base stations

705a and 705b may be co-located or may be separately installed in the field according to the deployment scenario. The

wireless devices

710a, 710b, 710c, and 710d can support multiple different radio access technologies. The techniques and embodiments described in the present document may be implemented by the base stations of wireless devices described in the present document.

FIG. 8 is a block diagram representation of a portion of a radio station in accordance with one or more embodiments of the present technology can be applied. A radio station 805 such as a base station or a wireless device (or UE) or MT can include processor electronics 810 such as a microprocessor that implements one or more of the wireless techniques presented in this document. The radio station 805 can include transceiver electronics 815 to send and/or receive wireless signals over one or more communication interfaces such as antenna 820. The radio station 805 can include other communication interfaces for transmitting and receiving data. Radio station 805 can include one or more memories (not explicitly shown) configured to store information such as data and/or instructions. In some implementations, the processor electronics 810 can include at least a portion of the transceiver electronics 815. In some embodiments, at least some of the disclosed techniques, modules or functions are implemented using the radio station 805. In some embodiments, the radio station 805 may be configured to perform the methods described herein.

It will be appreciated that the present document discloses techniques that can be embodied in various embodiments and configurations. It should be understood that concepts from some embodiments can be used for other embodiments. The disclosed and other embodiments, modules and the functional operations described in this document can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or in combinations of one or more of them. The disclosed and other embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a computer readable medium for execution by, or to control the operation of, data processing apparatus. The computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more them. The term “data processing apparatus” encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can include, in addition to hardware, code that creates an execution environment for the computer program in question, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them. A propagated signal is an artificially generated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus.

A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document) , in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code) . A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and interconnected by a communication network.

The processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit) .

Processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read only memory or a random-access memory or both. The essential elements of a computer are a processor for performing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto optical disks, or optical disks. However, a computer need not have such devices. Computer readable media suitable for storing computer program instructions and data include all forms of non-volatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto optical disks; and CD ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

While this patent document contains many specifics, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. Certain features that are described in this patent document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Moreover, the separation of various system components in the embodiments described in this patent document should not be understood as requiring such separation in all embodiments.

Only a few implementations and examples are described, and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent document.

Claims

An information transmission method comprising:

transmitting, from a first wireless device, an indication relating to whether a second device can provide assistance resource selection information; and

upon transmitting the indication, starting or restarting a timer having a value T0 at the first wireless device.
The method according to claim 1, wherein the assistance resource selection information is related to: (a) a priority of the logical channel that second device need to provide assistance resource selection information for the priority, or (b) a destination ID that second device need to provide assistance resource selection information for the destination, or (c) a logical channel ID that second device need to provide assistance resource selection information for the logical channel, or (d) the resource pool or resource pool ID that second device need to provide assistance resource selection information for the resource pool, or (e) the value of a timer T0, that second device need to provide assistance resource selection information before T0 expiry wherein the value T0 is configured per the first wireless device, or the Data Radio Bearer (DRB) , or the Sidelink Signaling Radio Bearer (SRB) , or the destination, or the logical channel, or the priority, or the resource pool, or the Common Resource Block (CRB) .
The method according to claim 3, wherein the value T0 is configured per the first wireless device, or the DRB, or the SRB, or the destination, or the logical channel, or the priority, or the resource pool, or the CRB.
The method according to claim 3, wherein the value T0 is configured per the first wireless device, wherein the first device wireless can start or restart timer T0 after an indication that the second wireless device is providing the assistance resource selection information for the first wireless device, wherein the transmission resource of the first wireless device is determined based at least in part on the assistance resource selection information from the second wireless device.
The method according to claim 3, further comprising one or more logical channels, each logical channel having a priority, wherein the value T0 is configured per priority , wherein the first wireless device starts or restarts time T0 after an indication that the second wireless device is providing the assistance resource selection information for the logical channel with the priority, wherein the first wireless device determines the transmission resource of the respective logical channel with the priority based at least in part on the device assistance resource selection information.
The method according to claim 3, further comprising one or more values T0 each configured by and associated with each one or more destinations, wherein the first wireless device starts or restarts time T0 for each destination after an indication that the second wireless device is providing the assistance resource selection information for the destinations, wherein the first wireless device determines a transmission resource of the respective destination based at least in part on the device assistance resource selection information.
The method according to claim 3, wherein the value T0 is configured per the DRB, the SRB, or the logical channel, wherein the first wireless device associates the value T0 for each logical channel, wherein the first wireless device starts or restarts time T0 after an indication that the second wireless device is providing the assistance resource selection information for the logical channel, wherein the first wireless device determines the transmission resource of the logical channel based at least in part on the device assistance resource selection information.
The method according to claim 3, wherein the value T0 is configured per the DRB, the SRB, wherein the first wireless device associates the value T0 for each logical channel, wherein the first wireless device starts or restarts time T0 after an indication that the second wireless device is providing the assistance resource selection information for the DRB or SRB, wherein the first wireless device determines the transmission resource of the DRB or SRB based at least in part on the device assistance resource selection information.
The method according to claim 3, wherein the first wireless device associates one timer for every resource pool and the value of T0 is configured per each resource pool, the first wireless device is configured to start or restart timer T0 for each resource pool if the second wireless device provides assistance resource selection information, and the first wireless device determines transmission resources in this resource pool by taking assistance resource selection information from the second wireless device into consideration.
The method according to claim 3, wherein the value t0 is configured per CBR or CBR range and first wireless device associates one timer for every CBR or CBR range, the first wireless device is configured to start or restart timer T0 for the CBR range if the first wireless device is taking assistance resource selection information from the second wireless device into consideration.
The method according to claim 3, wherein the value T0 is configured via a pre-configuration, or system information, or Radio Resource Control (RRC) signaling, or PC5 RRC signaling.
The method according to claims 7-10, wherein the transmission resource is selected to create a grant if the timer is not running or has passed T0 or wherein the first wireless device obtains the assistance resource selection information from the second wireless device and the transmission resource is selected to create the grant by taking the assistance resource selection information into consideration if the timer is running .
The method according to claim 12, wherein the first wireless device is configured to select a destination related to one of a unicast, a groupcast and a broadcast having a logical channel with the highest priority or the MAC Control Element (MAC CE) , among the logical channels that satisfy the specific conditions and MAC CE (s) , if any, for the grant associated with the Sidelink Control Information (SCI) .
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if timer T0 of the logical channel expired and the value of T0 is configured per the logical channel.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if timer T0 of the destination has expired and the value of T0 is configured per the destination and the logical channel belongs to the destination.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if the timer T0 of the priority has expired and the value of T0 is configured per the priority and the logical channel is configured with the priority.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if the timer T0 expired and the value of T0 is configured per the first wireless device.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per DRB/SRB and T0 of the DRB/SRB is not running or has expired.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per resource pool and the resource pool associated with T0 is selected to create the grant and the T0 of the resource pool is not running or has expired.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per CBR and T0 is not running or expired.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per the first wireless device, T0 is running, and the first wireless device obtains the second wireless device’s assistance resource selection information.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per destination, T0 of the destination is running, and the first wireless device determines the transmission resource of the destination by taking assistance resource selection information from the second wireless device into consideration, and the first wireless device receives assistance resource selection information for the destination from the second wireless device.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per destination, T0 of the destination is running, and the first wireless device determines the transmission resource of the destination by taking assistance resource selection information from second wireless device into consideration, and the first wireless device receives assistance resource selection information for the destination from the second wireless device.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per priority of the logical channel, T0 of the priority is running, and the first wireless device determines transmission resource of the logical channel with the priority by taking assistance resource selection information from the second wireless device into consideration, and the first wireless device receives assistance resource selection information for the priority from the second wireless device.
The method according to claim 13, wherein the first wireless device selects a logical channel belonging to the selected destination if T0 is associated per CBR, T0 is not running or expiry, and UE-B receives assistance resource selection information.
The method according to claim 13, wherein the logical channel is selected if a reliability of the logical channel is lower than a reliability threshold, wherein the first wireless device receives the assistance resource selection information and the first wireless device determines the logical channel based at least in part of the assistance resource selection information.
The method according to claim 13, wherein the logical channel is selected if a reliability of the logical channel is lower than a reliability threshold.
The method according to claim 13, wherein the priority of the logical channel is lower is lower than a reliability threshold, wherein the first wireless device receives the assistance resource selection information and the first wireless device determines the transmission resource based at least in part of the assistance resource selection information.
The method according to claims 26-28, wherein the reliability threshold or a priority threshold is configured via a pre-configuration, or system information, or RRC signaling.
The method according to claims 26-28, wherein the reliability threshold or a priority threshold is configured via per: wireless device, or priority, or logical channel, or DRB.
An information transmission method comprising:

transmitting, from a first wireless device to one or more wireless devices, an indication relating to whether a second device can provide assistance resource selection information; and

receiving, at the first wireless device, a response to the indication.
The method according to claim 31, wherein one or more devices indicate that they can provide assistance resource selection information for another one of the one or more devices, wherein the first wireless device determines a transmission resource used to send data to the device or another one of the one or more devices based in part on the assistance resource selection information provided by the device.
The method according to claim 31, wherein one of the one or more devices indicates that it can provide assistance resource selection information for itself only, wherein the first wireless device determines a transmission resource used to send data to the device based in part on the assistance resource selection information provided by the one of the one or more devices.
The method according to claim 31, wherein one of the one or more devices indicates that it can not provide assistance resource selection information for itself and another one of the one or more devices, wherein the another one of the one or more devices indicates that it can provide assistance resource selection information for itself and another one of the one or more devices, wherein the first wireless device determines a transmission resource used to send data to the device based in part on the assistance resource selection information provided by the another one of the one or more devices.
A wireless communication device comprising a processor configured to implement a method recited in any one or more of claims 1-34.